./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e0883f4fdefc9bee6f97a4f9cfd1a3af8920c2853d796abd89e2a581ffdb6b5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:20:20,599 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:20:20,655 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:20:20,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:20:20,660 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:20:20,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:20:20,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:20:20,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:20:20,682 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:20:20,682 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:20:20,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:20:20,683 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:20:20,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:20:20,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:20:20,683 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:20:20,683 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:20:20,683 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:20:20,683 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:20:20,684 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:20:20,684 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:20:20,684 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:20:20,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:20:20,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:20:20,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:20:20,684 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:20:20,684 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:20:20,684 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:20:20,684 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:20:20,684 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:20:20,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:20:20,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:20:20,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:20:20,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:20:20,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:20:20,685 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:20:20,685 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:20:20,685 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:20:20,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:20:20,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:20:20,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:20:20,685 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:20:20,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:20:20,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:20:20,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:20:20,686 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:20:20,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:20:20,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:20:20,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:20:20,686 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e0883f4fdefc9bee6f97a4f9cfd1a3af8920c2853d796abd89e2a581ffdb6b5 [2024-12-02 14:20:20,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:20:20,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:20:20,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:20:20,919 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:20:20,920 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:20:20,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/array-fpi/eqn5.c [2024-12-02 14:20:23,570 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/data/974d757aa/5ba44312b715411981511af32e12e765/FLAGcb177ec93 [2024-12-02 14:20:23,765 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:20:23,766 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/sv-benchmarks/c/array-fpi/eqn5.c [2024-12-02 14:20:23,777 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/data/974d757aa/5ba44312b715411981511af32e12e765/FLAGcb177ec93 [2024-12-02 14:20:23,790 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/data/974d757aa/5ba44312b715411981511af32e12e765 [2024-12-02 14:20:23,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:20:23,793 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:20:23,794 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:20:23,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:20:23,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:20:23,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:23,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62603b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23, skipping insertion in model container [2024-12-02 14:20:23,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:23,810 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:20:23,917 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/sv-benchmarks/c/array-fpi/eqn5.c[587,600] [2024-12-02 14:20:23,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:20:23,943 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:20:23,952 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/sv-benchmarks/c/array-fpi/eqn5.c[587,600] [2024-12-02 14:20:23,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:20:23,971 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:20:23,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23 WrapperNode [2024-12-02 14:20:23,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:20:23,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:20:23,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:20:23,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:20:23,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:23,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:23,998 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2024-12-02 14:20:23,998 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:20:23,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:20:23,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:20:23,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:20:24,005 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:24,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:24,007 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:24,020 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 7, 4, 4]. 41 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2024-12-02 14:20:24,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:24,020 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:24,025 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:24,026 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:24,030 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:24,031 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:24,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:24,033 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:20:24,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:20:24,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:20:24,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:20:24,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (1/1) ... [2024-12-02 14:20:24,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:20:24,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:20:24,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:20:24,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:20:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:20:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:20:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:20:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 14:20:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 14:20:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 14:20:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 14:20:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 14:20:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 14:20:24,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 14:20:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:20:24,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:20:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 14:20:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 14:20:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 14:20:24,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 14:20:24,156 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:20:24,158 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:20:24,296 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-12-02 14:20:24,297 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:20:24,305 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:20:24,305 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 14:20:24,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:20:24 BoogieIcfgContainer [2024-12-02 14:20:24,305 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:20:24,308 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:20:24,308 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:20:24,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:20:24,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:20:23" (1/3) ... [2024-12-02 14:20:24,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a48c15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:20:24, skipping insertion in model container [2024-12-02 14:20:24,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:23" (2/3) ... [2024-12-02 14:20:24,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a48c15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:20:24, skipping insertion in model container [2024-12-02 14:20:24,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:20:24" (3/3) ... [2024-12-02 14:20:24,313 INFO L128 eAbstractionObserver]: Analyzing ICFG eqn5.c [2024-12-02 14:20:24,324 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:20:24,325 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG eqn5.c that has 1 procedures, 21 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-12-02 14:20:24,371 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:20:24,382 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29560ea3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:20:24,382 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:20:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 14:20:24,389 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:20:24,390 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:20:24,390 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:20:24,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:20:24,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1602504550, now seen corresponding path program 1 times [2024-12-02 14:20:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:20:24,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326206290] [2024-12-02 14:20:24,399 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:24,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:20:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:20:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:20:24,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:20:24,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326206290] [2024-12-02 14:20:24,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326206290] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:20:24,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:20:24,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:20:24,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390156097] [2024-12-02 14:20:24,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:20:24,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:20:24,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:20:24,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:20:24,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:20:24,546 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:20:24,555 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2024-12-02 14:20:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:20:24,556 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-12-02 14:20:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:20:24,561 INFO L225 Difference]: With dead ends: 38 [2024-12-02 14:20:24,561 INFO L226 Difference]: Without dead ends: 17 [2024-12-02 14:20:24,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:20:24,565 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:20:24,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:20:24,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-12-02 14:20:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-12-02 14:20:24,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-12-02 14:20:24,587 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2024-12-02 14:20:24,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:20:24,587 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-12-02 14:20:24,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-12-02 14:20:24,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 14:20:24,588 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:20:24,588 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:20:24,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:20:24,589 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:20:24,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:20:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1995531560, now seen corresponding path program 1 times [2024-12-02 14:20:24,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:20:24,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771615870] [2024-12-02 14:20:24,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:24,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:20:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 14:20:24,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [654237462] [2024-12-02 14:20:24,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:24,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:20:24,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:20:24,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:20:24,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:20:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:20:24,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 14:20:24,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:20:24,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 14:20:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:20:24,848 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:20:24,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:20:24,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771615870] [2024-12-02 14:20:24,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 14:20:24,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654237462] [2024-12-02 14:20:24,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654237462] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:20:24,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:20:24,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:20:24,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427681575] [2024-12-02 14:20:24,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:20:24,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:20:24,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:20:24,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:20:24,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:20:24,852 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:24,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:20:24,929 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-12-02 14:20:24,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:20:24,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-12-02 14:20:24,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:20:24,930 INFO L225 Difference]: With dead ends: 32 [2024-12-02 14:20:24,930 INFO L226 Difference]: Without dead ends: 30 [2024-12-02 14:20:24,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:20:24,931 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:20:24,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 50 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:20:24,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-12-02 14:20:24,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2024-12-02 14:20:24,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:24,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-12-02 14:20:24,948 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2024-12-02 14:20:24,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:20:24,948 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-12-02 14:20:24,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:24,948 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-12-02 14:20:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-02 14:20:24,949 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:20:24,949 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:20:24,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:20:25,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:20:25,150 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:20:25,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:20:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash -949112548, now seen corresponding path program 1 times [2024-12-02 14:20:25,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:20:25,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176565441] [2024-12-02 14:20:25,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:25,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:20:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:20:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:20:25,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:20:25,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176565441] [2024-12-02 14:20:25,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176565441] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:20:25,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:20:25,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:20:25,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285667332] [2024-12-02 14:20:25,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:20:25,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:20:25,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:20:25,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:20:25,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:20:25,314 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:20:25,366 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2024-12-02 14:20:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:20:25,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-12-02 14:20:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:20:25,367 INFO L225 Difference]: With dead ends: 42 [2024-12-02 14:20:25,367 INFO L226 Difference]: Without dead ends: 33 [2024-12-02 14:20:25,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:20:25,369 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:20:25,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 30 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:20:25,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-12-02 14:20:25,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2024-12-02 14:20:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-12-02 14:20:25,374 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2024-12-02 14:20:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:20:25,374 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-12-02 14:20:25,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-12-02 14:20:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-02 14:20:25,375 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:20:25,375 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:20:25,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:20:25,375 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:20:25,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:20:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1229753632, now seen corresponding path program 1 times [2024-12-02 14:20:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:20:25,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829649797] [2024-12-02 14:20:25,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:25,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:20:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 14:20:25,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238574052] [2024-12-02 14:20:25,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:25,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:20:25,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:20:25,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:20:25,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:20:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:20:25,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 14:20:25,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:20:25,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 14:20:25,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:20:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:20:25,640 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:20:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:20:25,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:20:25,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829649797] [2024-12-02 14:20:25,923 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 14:20:25,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238574052] [2024-12-02 14:20:25,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238574052] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:20:25,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:20:25,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-12-02 14:20:25,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348840315] [2024-12-02 14:20:25,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 14:20:25,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:20:25,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:20:25,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:20:25,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:20:25,925 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:26,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:20:26,088 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2024-12-02 14:20:26,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:20:26,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-12-02 14:20:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:20:26,090 INFO L225 Difference]: With dead ends: 58 [2024-12-02 14:20:26,090 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 14:20:26,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:20:26,091 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 45 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:20:26,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 45 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:20:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 14:20:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 29. [2024-12-02 14:20:26,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:26,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-12-02 14:20:26,098 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 17 [2024-12-02 14:20:26,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:20:26,099 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-12-02 14:20:26,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-12-02 14:20:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-02 14:20:26,099 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:20:26,099 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:20:26,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:20:26,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:20:26,300 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:20:26,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:20:26,301 INFO L85 PathProgramCache]: Analyzing trace with hash -520438946, now seen corresponding path program 1 times [2024-12-02 14:20:26,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:20:26,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621402979] [2024-12-02 14:20:26,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:26,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:20:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:20:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:20:26,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:20:26,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621402979] [2024-12-02 14:20:26,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621402979] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:20:26,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545446571] [2024-12-02 14:20:26,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:26,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:20:26,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:20:26,410 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:20:26,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:20:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:20:26,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 14:20:26,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:20:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:20:26,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:20:26,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545446571] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:20:26,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:20:26,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-12-02 14:20:26,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456212965] [2024-12-02 14:20:26,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:20:26,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:20:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:20:26,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:20:26,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:20:26,533 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:20:26,621 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2024-12-02 14:20:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:20:26,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-12-02 14:20:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:20:26,622 INFO L225 Difference]: With dead ends: 48 [2024-12-02 14:20:26,623 INFO L226 Difference]: Without dead ends: 34 [2024-12-02 14:20:26,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:20:26,624 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:20:26,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 27 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:20:26,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-12-02 14:20:26,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2024-12-02 14:20:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:26,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-12-02 14:20:26,629 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 17 [2024-12-02 14:20:26,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:20:26,629 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-12-02 14:20:26,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-12-02 14:20:26,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 14:20:26,630 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:20:26,630 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:20:26,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:20:26,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:20:26,831 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:20:26,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:20:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1706306392, now seen corresponding path program 2 times [2024-12-02 14:20:26,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:20:26,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741588016] [2024-12-02 14:20:26,831 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:20:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:20:26,867 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:20:26,867 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:20:27,007 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:20:27,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:20:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741588016] [2024-12-02 14:20:27,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741588016] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:20:27,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832009838] [2024-12-02 14:20:27,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:20:27,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:20:27,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:20:27,009 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:20:27,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:20:27,082 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:20:27,082 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:20:27,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:20:27,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:20:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 14:20:27,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:20:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 14:20:27,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832009838] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:20:27,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:20:27,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2024-12-02 14:20:27,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980308320] [2024-12-02 14:20:27,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:20:27,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:20:27,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:20:27,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:20:27,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:20:27,184 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:20:27,332 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2024-12-02 14:20:27,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:20:27,333 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-12-02 14:20:27,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:20:27,334 INFO L225 Difference]: With dead ends: 71 [2024-12-02 14:20:27,334 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 14:20:27,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:20:27,335 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:20:27,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 43 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:20:27,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 14:20:27,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 33. [2024-12-02 14:20:27,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.1875) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-12-02 14:20:27,342 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 21 [2024-12-02 14:20:27,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:20:27,342 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-12-02 14:20:27,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:27,343 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-12-02 14:20:27,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-12-02 14:20:27,343 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:20:27,343 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:20:27,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:20:27,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 14:20:27,544 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:20:27,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:20:27,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1863956058, now seen corresponding path program 1 times [2024-12-02 14:20:27,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:20:27,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689417374] [2024-12-02 14:20:27,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:27,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:20:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 14:20:27,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833072784] [2024-12-02 14:20:27,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:20:27,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:20:27,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:20:27,600 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:20:27,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:20:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:20:27,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 14:20:27,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:20:27,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 14:20:27,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 14:20:27,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-12-02 14:20:27,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-12-02 14:20:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:20:28,037 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:20:28,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:20:28,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:20:28,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689417374] [2024-12-02 14:20:28,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 14:20:28,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833072784] [2024-12-02 14:20:28,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833072784] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:20:28,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:20:28,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-12-02 14:20:28,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288671788] [2024-12-02 14:20:28,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 14:20:28,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 14:20:28,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:20:28,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 14:20:28,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:20:28,830 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:30,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:20:30,011 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2024-12-02 14:20:30,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 14:20:30,012 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-12-02 14:20:30,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:20:30,013 INFO L225 Difference]: With dead ends: 81 [2024-12-02 14:20:30,013 INFO L226 Difference]: Without dead ends: 79 [2024-12-02 14:20:30,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2024-12-02 14:20:30,014 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 96 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:20:30,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 116 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:20:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-12-02 14:20:30,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 46. [2024-12-02 14:20:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:30,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2024-12-02 14:20:30,026 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 21 [2024-12-02 14:20:30,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:20:30,026 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2024-12-02 14:20:30,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:30,026 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2024-12-02 14:20:30,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-12-02 14:20:30,027 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:20:30,027 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:20:30,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 14:20:30,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 14:20:30,228 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:20:30,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:20:30,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1814994348, now seen corresponding path program 3 times [2024-12-02 14:20:30,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:20:30,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924673347] [2024-12-02 14:20:30,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 14:20:30,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:20:30,297 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 14:20:30,297 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:20:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:20:30,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:20:30,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924673347] [2024-12-02 14:20:30,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924673347] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:20:30,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752354635] [2024-12-02 14:20:30,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 14:20:30,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:20:30,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:20:30,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:20:30,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:20:30,658 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 14:20:30,658 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:20:30,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 14:20:30,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:20:30,716 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:20:30,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:20:30,764 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:20:30,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752354635] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:20:30,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:20:30,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-12-02 14:20:30,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376617665] [2024-12-02 14:20:30,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:20:30,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:20:30,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:20:30,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:20:30,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:20:30,766 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:20:30,917 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2024-12-02 14:20:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 14:20:30,917 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-12-02 14:20:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:20:30,918 INFO L225 Difference]: With dead ends: 86 [2024-12-02 14:20:30,918 INFO L226 Difference]: Without dead ends: 77 [2024-12-02 14:20:30,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:20:30,919 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 43 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:20:30,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 57 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:20:30,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-12-02 14:20:30,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 44. [2024-12-02 14:20:30,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2024-12-02 14:20:30,929 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 23 [2024-12-02 14:20:30,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:20:30,930 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2024-12-02 14:20:30,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:20:30,930 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2024-12-02 14:20:30,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-02 14:20:30,930 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:20:30,930 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:20:30,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 14:20:31,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:20:31,131 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:20:31,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:20:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1350776240, now seen corresponding path program 4 times [2024-12-02 14:20:31,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:20:31,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394851189] [2024-12-02 14:20:31,131 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 14:20:31,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:20:31,226 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 14:20:31,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-12-02 14:20:31,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161273193] [2024-12-02 14:20:31,228 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 14:20:31,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:20:31,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:20:31,229 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:20:31,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 14:20:31,355 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 14:20:31,355 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:20:31,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 14:20:31,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:20:31,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 14:20:31,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:20:31,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:20:31,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-02 14:20:31,493 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:20:31,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:20:52,034 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification. DAG size of input: 16 DAG size of output: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:21:24,535 WARN L286 SmtUtils]: Spent 28.14s on a formula simplification. DAG size of input: 69 DAG size of output: 66 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:21:32,608 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:21:36,667 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 14:21:36,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394851189] [2024-12-02 14:21:36,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 14:21:36,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161273193] [2024-12-02 14:21:36,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161273193] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:21:36,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:21:36,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-12-02 14:21:36,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109805915] [2024-12-02 14:21:36,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 14:21:36,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:21:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:36,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:21:36,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:21:36,669 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:21:37,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:37,298 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2024-12-02 14:21:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 14:21:37,298 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-12-02 14:21:37,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:37,300 INFO L225 Difference]: With dead ends: 114 [2024-12-02 14:21:37,300 INFO L226 Difference]: Without dead ends: 112 [2024-12-02 14:21:37,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:21:37,301 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 117 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:37,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 95 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:21:37,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-12-02 14:21:37,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 52. [2024-12-02 14:21:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 51 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:21:37,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2024-12-02 14:21:37,313 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 25 [2024-12-02 14:21:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:37,313 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2024-12-02 14:21:37,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:21:37,313 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2024-12-02 14:21:37,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-02 14:21:37,314 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:37,314 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:21:37,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 14:21:37,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:21:37,515 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:37,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:37,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1193126574, now seen corresponding path program 2 times [2024-12-02 14:21:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755566939] [2024-12-02 14:21:37,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:21:37,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:37,531 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:21:37,531 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:21:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:21:37,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:37,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755566939] [2024-12-02 14:21:37,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755566939] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:21:37,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783363732] [2024-12-02 14:21:37,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:21:37,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:21:37,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:21:37,652 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:21:37,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 14:21:37,728 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:21:37,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:21:37,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:21:37,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:21:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:21:37,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:21:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:21:37,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783363732] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:21:37,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:21:37,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-12-02 14:21:37,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764911865] [2024-12-02 14:21:37,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:21:37,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:21:37,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:37,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:21:37,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:21:37,852 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:21:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:38,329 INFO L93 Difference]: Finished difference Result 108 states and 119 transitions. [2024-12-02 14:21:38,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 14:21:38,330 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-12-02 14:21:38,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:38,330 INFO L225 Difference]: With dead ends: 108 [2024-12-02 14:21:38,330 INFO L226 Difference]: Without dead ends: 93 [2024-12-02 14:21:38,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=214, Invalid=598, Unknown=0, NotChecked=0, Total=812 [2024-12-02 14:21:38,331 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 96 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:38,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 112 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:21:38,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-12-02 14:21:38,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 51. [2024-12-02 14:21:38,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:21:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2024-12-02 14:21:38,340 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 25 [2024-12-02 14:21:38,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:38,340 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2024-12-02 14:21:38,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:21:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2024-12-02 14:21:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-02 14:21:38,341 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:38,341 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:21:38,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 14:21:38,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 14:21:38,542 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:38,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:38,542 INFO L85 PathProgramCache]: Analyzing trace with hash -995994836, now seen corresponding path program 3 times [2024-12-02 14:21:38,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:38,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560805343] [2024-12-02 14:21:38,542 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 14:21:38,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:38,568 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 14:21:38,569 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:21:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:21:38,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:21:38,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560805343] [2024-12-02 14:21:38,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560805343] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:21:38,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747271171] [2024-12-02 14:21:38,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 14:21:38,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:21:38,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:21:38,717 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:21:38,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 14:21:38,812 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 14:21:38,812 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:21:38,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 14:21:38,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:21:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:21:38,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:21:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:21:38,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747271171] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:21:38,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:21:38,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-12-02 14:21:38,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962964048] [2024-12-02 14:21:38,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:21:38,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:21:38,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:21:38,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:21:38,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:21:38,996 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:21:39,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:21:39,154 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-12-02 14:21:39,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:21:39,154 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-12-02 14:21:39,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:21:39,155 INFO L225 Difference]: With dead ends: 85 [2024-12-02 14:21:39,155 INFO L226 Difference]: Without dead ends: 65 [2024-12-02 14:21:39,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-12-02 14:21:39,155 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:21:39,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 62 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:21:39,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-12-02 14:21:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 50. [2024-12-02 14:21:39,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:21:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-12-02 14:21:39,166 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 25 [2024-12-02 14:21:39,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:21:39,166 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-12-02 14:21:39,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:21:39,166 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-12-02 14:21:39,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-12-02 14:21:39,167 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:21:39,167 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:21:39,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 14:21:39,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:21:39,368 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:21:39,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:21:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1417030198, now seen corresponding path program 4 times [2024-12-02 14:21:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:21:39,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106411347] [2024-12-02 14:21:39,368 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 14:21:39,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:21:39,497 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 14:21:39,498 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-12-02 14:21:39,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [71643770] [2024-12-02 14:21:39,499 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 14:21:39,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:21:39,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:21:39,502 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:21:39,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 14:21:39,818 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 14:21:39,819 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:21:39,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 14:21:39,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:21:39,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 14:21:39,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-02 14:21:39,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-12-02 14:21:39,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 14:21:39,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-12-02 14:21:39,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 14:21:39,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-12-02 14:21:40,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-12-02 14:21:40,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 14:21:40,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-12-02 14:21:40,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 14:21:40,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2024-12-02 14:21:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:21:40,258 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:22:02,208 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:22:23,545 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse18 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse5 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse2 (* .cse5 8)) (.cse17 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse10 (* .cse18 8)) (.cse7 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse9 (select |c_#memory_int#3| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse4 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse12 (< .cse18 2147483648)) (.cse13 (< 2147483647 .cse18)) (.cse0 (or (< .cse7 2147483648) (= (select .cse9 .cse4) 11))) (.cse14 (+ .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse16 (* 8 .cse17)) (.cse6 (+ .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (+ (* 8 .cse7) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (< 2147483647 .cse5))) (and (or (let ((.cse11 (+ (select .cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse16)) (select .cse9 (+ (- 34359738368) .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or (let ((.cse1 (store .cse9 (+ .cse10 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse11))) (and (or (and .cse0 (forall ((v_DerPreprocessor_11 Int) (v_DerPreprocessor_9 Int)) (= 11 (select (store (store .cse1 (+ .cse2 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_DerPreprocessor_11) .cse3 v_DerPreprocessor_9) .cse4)))) (< .cse5 2147483648)) (or (and (forall ((v_DerPreprocessor_12 Int) (v_DerPreprocessor_9 Int)) (= 11 (select (store (store .cse1 .cse6 v_DerPreprocessor_12) .cse3 v_DerPreprocessor_9) .cse4))) (<= .cse7 2147483647)) .cse8))) .cse12) (or .cse13 (and (<= .cse5 2147483647) (forall ((v_DerPreprocessor_12 Int) (v_DerPreprocessor_9 Int)) (= (select (store (store (store .cse9 .cse14 .cse11) .cse6 v_DerPreprocessor_12) .cse3 v_DerPreprocessor_9) .cse4) 11)))))) (< .cse17 2147483648)) (or (and (or (and .cse0 (<= 2147483648 .cse5)) .cse12) (or .cse13 (and .cse0 (or (forall ((v_DerPreprocessor_12 Int) (v_DerPreprocessor_9 Int)) (= 11 (select (store (store (store .cse9 .cse14 (+ (select .cse9 (+ .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse16)))) .cse6 v_DerPreprocessor_12) .cse3 v_DerPreprocessor_9) .cse4))) .cse8)))) (< 2147483647 .cse17)))))) is different from false [2024-12-02 14:22:44,539 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:22:57,182 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse13 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse5 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (let ((.cse2 (* .cse5 8)) (.cse17 (mod (+ 4294967295 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse10 (* .cse13 8)) (.cse7 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse9 (select |c_#memory_int#3| |c_ULTIMATE.start_main_~b~0#1.base|)) (.cse4 (+ 8 |c_ULTIMATE.start_main_~b~0#1.offset|))) (let ((.cse0 (or (< .cse7 2147483648) (= (select .cse9 .cse4) 11))) (.cse12 (< .cse13 2147483648)) (.cse14 (+ .cse10 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse15 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse16 (* 8 .cse17)) (.cse6 (+ .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse3 (+ (* 8 .cse7) |c_ULTIMATE.start_main_~b~0#1.offset|)) (.cse8 (< 2147483647 .cse5))) (and (or (let ((.cse11 (+ (select .cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368) .cse16)) (select .cse9 (+ (- 34359738368) .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (and (or (let ((.cse1 (store .cse9 (+ .cse10 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse11))) (and (or (and .cse0 (forall ((v_DerPreprocessor_11 Int) (v_DerPreprocessor_9 Int)) (= 11 (select (store (store .cse1 (+ .cse2 (- 34359738368) |c_ULTIMATE.start_main_~b~0#1.offset|) v_DerPreprocessor_11) .cse3 v_DerPreprocessor_9) .cse4)))) (< .cse5 2147483648)) (or (and (forall ((v_DerPreprocessor_12 Int) (v_DerPreprocessor_9 Int)) (= 11 (select (store (store .cse1 .cse6 v_DerPreprocessor_12) .cse3 v_DerPreprocessor_9) .cse4))) (<= .cse7 2147483647)) .cse8))) .cse12) (or (< 2147483647 .cse13) (and (<= .cse5 2147483647) (forall ((v_DerPreprocessor_12 Int) (v_DerPreprocessor_9 Int)) (= (select (store (store (store .cse9 .cse14 .cse11) .cse6 v_DerPreprocessor_12) .cse3 v_DerPreprocessor_9) .cse4) 11)))))) (< .cse17 2147483648)) (or (and .cse0 (or .cse8 .cse12) (or (forall ((v_DerPreprocessor_12 Int) (v_DerPreprocessor_9 Int)) (= 11 (select (store (store (store .cse9 .cse14 (+ (select .cse9 (+ .cse16 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select .cse15 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse16)))) .cse6 v_DerPreprocessor_12) .cse3 v_DerPreprocessor_9) .cse4))) .cse8)) (< 2147483647 .cse17)))))) is different from false [2024-12-02 14:23:13,504 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:23:21,521 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:23:55,197 WARN L286 SmtUtils]: Spent 28.52s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:24:11,464 WARN L286 SmtUtils]: Spent 12.08s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:24:19,479 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:24:39,677 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:24:51,697 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:24:59,717 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:25:16,608 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:25:28,627 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:25:42,251 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:25:54,269 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:26:14,664 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:26:26,685 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:28:35,209 WARN L286 SmtUtils]: Spent 1.97m on a formula simplification that was a NOOP. DAG size: 82 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:28:40,408 WARN L286 SmtUtils]: Spent 5.14s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:28:52,427 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:29:04,447 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:29:16,469 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:29:39,106 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:29:55,157 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:30:11,138 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:30:23,160 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:30:31,176 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:30:36,284 WARN L286 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 14:32:18,432 WARN L286 SmtUtils]: Spent 1.52m on a formula simplification. DAG size of input: 82 DAG size of output: 80 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 14:32:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-12-02 14:32:18,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:32:18,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106411347] [2024-12-02 14:32:18,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 14:32:18,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71643770] [2024-12-02 14:32:18,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71643770] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:32:18,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:32:18,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 25 [2024-12-02 14:32:18,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884207757] [2024-12-02 14:32:18,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 14:32:18,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 14:32:18,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:32:18,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 14:32:18,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=417, Unknown=6, NotChecked=86, Total=600 [2024-12-02 14:32:18,437 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:32:23,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:32:27,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:32:31,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:32:35,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:35:31,903 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 14:35:31,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-12-02 14:35:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:35:31,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 266.6s TimeCoverageRelationStatistics Valid=91, Invalid=417, Unknown=6, NotChecked=86, Total=600 [2024-12-02 14:35:31,905 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:31,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 4 Unknown, 18 Unchecked, 17.2s Time] [2024-12-02 14:35:31,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 14:35:32,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 14:35:32,106 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:294) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 54 more [2024-12-02 14:35:32,112 INFO L158 Benchmark]: Toolchain (without parser) took 908318.66ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 74.1MB in the end (delta: 43.5MB). Peak memory consumption was 82.4MB. Max. memory is 16.1GB. [2024-12-02 14:35:32,112 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 14:35:32,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.84ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 106.2MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 14:35:32,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.85ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 104.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 14:35:32,113 INFO L158 Benchmark]: Boogie Preprocessor took 34.69ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 103.1MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 14:35:32,113 INFO L158 Benchmark]: RCFGBuilder took 271.54ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 90.6MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 14:35:32,114 INFO L158 Benchmark]: TraceAbstraction took 907803.46ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 74.1MB in the end (delta: 16.0MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. [2024-12-02 14:35:32,115 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 142.6MB. Free memory is still 83.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.84ms. Allocated memory is still 142.6MB. Free memory was 117.6MB in the beginning and 106.2MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.85ms. Allocated memory is still 142.6MB. Free memory was 105.9MB in the beginning and 104.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.69ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 103.1MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 271.54ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 90.6MB in the end (delta: 12.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 907803.46ms. Allocated memory is still 142.6MB. Free memory was 90.1MB in the beginning and 74.1MB in the end (delta: 16.0MB). Peak memory consumption was 57.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4e0883f4fdefc9bee6f97a4f9cfd1a3af8920c2853d796abd89e2a581ffdb6b5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:35:34,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:35:34,284 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 14:35:34,292 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:35:34,292 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:35:34,317 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:35:34,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:35:34,319 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:35:34,319 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:35:34,319 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:35:34,319 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:35:34,320 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:35:34,320 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:35:34,320 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:35:34,320 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:35:34,321 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:35:34,321 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:35:34,321 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:35:34,321 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:35:34,321 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:35:34,321 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:35:34,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:35:34,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:35:34,321 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 14:35:34,321 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 14:35:34,321 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 14:35:34,321 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:35:34,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:35:34,322 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:35:34,322 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:35:34,322 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:35:34,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:35:34,322 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:35:34,322 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:35:34,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:35:34,322 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:35:34,322 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:35:34,322 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:35:34,323 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:35:34,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:35:34,323 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:35:34,323 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:35:34,323 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:35:34,323 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:35:34,323 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 14:35:34,323 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 14:35:34,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:35:34,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:35:34,323 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:35:34,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:35:34,324 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e0883f4fdefc9bee6f97a4f9cfd1a3af8920c2853d796abd89e2a581ffdb6b5 [2024-12-02 14:35:34,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:35:34,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:35:34,614 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:35:34,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:35:34,616 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:35:34,618 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/array-fpi/eqn5.c [2024-12-02 14:35:37,845 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/data/8d26449d0/7ec4e1a67ab74fc189320ebcf91e84dd/FLAGf9bde5517 [2024-12-02 14:35:38,078 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:35:38,079 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/sv-benchmarks/c/array-fpi/eqn5.c [2024-12-02 14:35:38,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/data/8d26449d0/7ec4e1a67ab74fc189320ebcf91e84dd/FLAGf9bde5517 [2024-12-02 14:35:38,431 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/data/8d26449d0/7ec4e1a67ab74fc189320ebcf91e84dd [2024-12-02 14:35:38,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:35:38,434 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:35:38,435 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:35:38,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:35:38,439 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:35:38,440 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d622dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38, skipping insertion in model container [2024-12-02 14:35:38,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,456 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:35:38,579 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/sv-benchmarks/c/array-fpi/eqn5.c[587,600] [2024-12-02 14:35:38,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:35:38,609 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:35:38,619 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/sv-benchmarks/c/array-fpi/eqn5.c[587,600] [2024-12-02 14:35:38,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:35:38,638 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:35:38,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38 WrapperNode [2024-12-02 14:35:38,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:35:38,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:35:38,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:35:38,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:35:38,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,652 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,665 INFO L138 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2024-12-02 14:35:38,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:35:38,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:35:38,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:35:38,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:35:38,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,675 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,686 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 7, 4, 4]. 41 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0, 0]. The 4 writes are split as follows [0, 0, 2, 2]. [2024-12-02 14:35:38,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,692 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,693 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,697 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:35:38,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:35:38,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:35:38,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:35:38,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (1/1) ... [2024-12-02 14:35:38,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:35:38,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:38,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:35:38,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:35:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:35:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 14:35:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-12-02 14:35:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-12-02 14:35:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-12-02 14:35:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#0 [2024-12-02 14:35:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#1 [2024-12-02 14:35:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#2 [2024-12-02 14:35:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#3 [2024-12-02 14:35:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 14:35:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:35:38,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:35:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#0 [2024-12-02 14:35:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#1 [2024-12-02 14:35:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#2 [2024-12-02 14:35:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#3 [2024-12-02 14:35:38,834 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:35:38,836 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:35:39,074 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-12-02 14:35:39,074 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:35:39,084 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:35:39,084 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 14:35:39,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:35:39 BoogieIcfgContainer [2024-12-02 14:35:39,085 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:35:39,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:35:39,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:35:39,092 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:35:39,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:35:38" (1/3) ... [2024-12-02 14:35:39,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b9e6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:35:39, skipping insertion in model container [2024-12-02 14:35:39,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:35:38" (2/3) ... [2024-12-02 14:35:39,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b9e6c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:35:39, skipping insertion in model container [2024-12-02 14:35:39,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:35:39" (3/3) ... [2024-12-02 14:35:39,094 INFO L128 eAbstractionObserver]: Analyzing ICFG eqn5.c [2024-12-02 14:35:39,114 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:35:39,116 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG eqn5.c that has 1 procedures, 21 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-12-02 14:35:39,161 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:35:39,173 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@44585776, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:35:39,173 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:35:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:35:39,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 14:35:39,183 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:39,184 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:39,185 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:39,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:39,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1602504550, now seen corresponding path program 1 times [2024-12-02 14:35:39,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 14:35:39,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360262090] [2024-12-02 14:35:39,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:39,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:39,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:39,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:35:39,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:35:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:39,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:35:39,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:35:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:35:39,354 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:35:39,354 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 14:35:39,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360262090] [2024-12-02 14:35:39,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360262090] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:39,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:39,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:35:39,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262776306] [2024-12-02 14:35:39,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:39,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:35:39,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 14:35:39,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:35:39,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:35:39,379 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:35:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:39,391 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2024-12-02 14:35:39,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:35:39,393 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-12-02 14:35:39,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:39,399 INFO L225 Difference]: With dead ends: 38 [2024-12-02 14:35:39,399 INFO L226 Difference]: Without dead ends: 17 [2024-12-02 14:35:39,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:35:39,404 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:39,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:35:39,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-12-02 14:35:39,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-12-02 14:35:39,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:35:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-12-02 14:35:39,440 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2024-12-02 14:35:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:39,441 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-12-02 14:35:39,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:35:39,441 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-12-02 14:35:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 14:35:39,442 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:39,442 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:39,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:35:39,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:39,643 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:39,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1995531560, now seen corresponding path program 1 times [2024-12-02 14:35:39,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 14:35:39,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682934199] [2024-12-02 14:35:39,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:39,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:39,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:39,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:35:39,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:35:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:39,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 14:35:39,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:35:39,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 14:35:39,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-12-02 14:35:40,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 14:35:40,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2024-12-02 14:35:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:35:40,170 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:35:40,170 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 14:35:40,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682934199] [2024-12-02 14:35:40,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682934199] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:40,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:40,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:35:40,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127014928] [2024-12-02 14:35:40,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:40,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:35:40,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 14:35:40,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:35:40,173 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:35:40,173 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:35:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:40,471 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-12-02 14:35:40,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:35:40,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-12-02 14:35:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:40,473 INFO L225 Difference]: With dead ends: 32 [2024-12-02 14:35:40,473 INFO L226 Difference]: Without dead ends: 30 [2024-12-02 14:35:40,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:35:40,474 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:40,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 54 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:35:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-12-02 14:35:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2024-12-02 14:35:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:35:40,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-12-02 14:35:40,481 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2024-12-02 14:35:40,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:40,481 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-12-02 14:35:40,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:35:40,481 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-12-02 14:35:40,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-02 14:35:40,482 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:40,482 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:40,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:35:40,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:40,683 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:40,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:40,684 INFO L85 PathProgramCache]: Analyzing trace with hash -949112548, now seen corresponding path program 1 times [2024-12-02 14:35:40,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 14:35:40,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292060467] [2024-12-02 14:35:40,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:35:40,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:35:40,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:35:40,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:35:40,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:35:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:35:40,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 14:35:40,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:35:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:35:40,928 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:35:40,928 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 14:35:40,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292060467] [2024-12-02 14:35:40,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292060467] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:35:40,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:35:40,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:35:40,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949108114] [2024-12-02 14:35:40,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:35:40,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:35:40,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 14:35:40,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:35:40,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:35:40,930 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:35:41,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:41,090 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2024-12-02 14:35:41,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:35:41,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-12-02 14:35:41,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:41,091 INFO L225 Difference]: With dead ends: 42 [2024-12-02 14:35:41,091 INFO L226 Difference]: Without dead ends: 33 [2024-12-02 14:35:41,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:35:41,093 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:41,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 27 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:35:41,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-12-02 14:35:41,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2024-12-02 14:35:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:35:41,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-12-02 14:35:41,100 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 15 [2024-12-02 14:35:41,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:41,101 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-12-02 14:35:41,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:35:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-12-02 14:35:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-12-02 14:35:41,102 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:41,102 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:35:41,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3c87d6e-4787-4aad-82a5-64ede282415e/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0